Originally posted by Winder Flickr and 500px represent a pretty good sample of photography enthusiasts. Enthusiasts are Ricoh's target market. Maybe you can give me another photo-sharing website that is a better, larger representation of photography enthusiasts? We can look at that one as well.
There is no evidence the Flickr as any bias towards or against any brand. Unless you have some you want to share.
Do you realize my point is that a very small selection of photo sharing websites is not statistical sampling of brand ownership? If so, why are you asking me to give another example of what doesn't work?
What you're measuring here is just "brand usage on Flickr and 500px". Not "global camera market share".
And there are questions about their data gathering process and statistics. Something is fishy, for example here:
https://www.flickr.com/cameras/pentax/
the K-3 has 0 items, yet it's #1 and has "3,331 uploads from 189 users yesterday". Does that influence the more general statistics?
Then, the K-3II is under Ricoh and K-1 is missing altogether (Flickr seems to be quite reticent in accepting new Pentax cameras).
Getting back to the concept of statistical data; you are introducing a bias when you're selecting Flickr as "representative" for the entire market (selection bias). Without a properly randomized selection process, there's a very good chance that any conclusion you might draw is invalid.
For example, what if Pentax is most popular (and sold) in Japan, and what if the Japanese don't use Flickr a lot? What if camera (ILC) users don't uniformly use Flickr?
P.S. I hope you note how I'm not claiming that globally, Pentax is ahead of Fujifilm (like I did for Japan, where I had the BCNRanking data). Why is that? Because I don't have data, thus I don't know one way or the other.
Last edited by Kunzite; 08-13-2016 at 11:50 PM.